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. D. M. SMALL. DEVICE FOR GARBURETING GAS 0R AIR Patented Feb: 28, 1882.

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UNITED STATES PATENT. OFFICE.

DEXTER M. SMALL, OF EAST PROVIDENCE, RHODE ISLAND.

DEVICE FOR CAR BURETING GAS OR AIR.

SPECIFICATION forming part of Letters Patent No. 254,243, dated February 28, 1882,

Application filed March 7, 1881. (No model.)

To all whom it may concern v Be it known that I, DEXTER M. SMALL, of

East Providence, county of Providence, and

State of Rhode Island, have invented an Improved Device for Oarhuretin g Gas or Air, simple in construction, perfectly safe to be placed in any part of a building, adapted to any number of burners, adjustable to any variation in the quality of gas used, and also to any varia tion in the weather, all of these points having been found by experience essential in a carburetor.

Figure 1 is a vertical section through the center of my device, which, with Fig. 2, showing a bottom view of chamber B, fully illustrates every part thereof.

Aisatankfor holdingthecarbureting-liquid.

B isachamber, open at the bottom, with partitions thereinlas seen in the bottom view, Fig. 2, and surrounded by a closed chamber, 0, which supports the chamber B in and keeps the top of it at a certain height above the surface of the liquid, as indicated.

To the chamber B is attached a pipe, D, free to slide up and down inthe pipeE, through which the gas, &c., enters the carburetor, passing over the surface of the liquid through the chamber B, around the partitions, and out through the aperture F. The chamber B is divided into narrow channels by these partitions, so that the gas in passing through will form a more rapid current, and thus take up more of the hydrocarbon than it otherwise would. These channels remain of a constant height, since the chamber B floats in the liquid and is free to descend as the level of the liquid is reduced by evaporation. The result would be the same if the chamber B were stationary and other means employed to maintain a constant level of the liquid-therein, so as not to increase the capacity of the channel through which the gas or air flows, the object being, as stated, a more rapid current than hitherto obtained in carburetors to facilitate evaporation. After passing out of the aperture F the gas enters the pipe G and passes down into the main outlet-pipe H. By means of the valve I all of the gas can be admitted to the carburetor, or any portion of it be allowed to pass around. through the pipe K, the amount depending upon the quality of gas used or the extent to which it may be carbureted without being objectionable. The valve is so constructed and arranged as to open one outlet as it closes the other, one being entirely open and the other closed, or both partially open, as may be necessary; and since the gas is made to descend to the same level, whether passing through or around the carburetor, it will go as readily through one outlet as the other, and thus the proportion to be directly carbureted can be adjusted at pleasure.

To guard against extreme cold, which causes condensation and retards evaporation, another chamber, L, is employed, through which the gas passes before entering the carburetor. This chamber can be subjected toany desired amount of heat by means of a burner at M, and for better utilizingthe heat is surrounded by a covering, 0. It is divided by partitions similar to those in the chamber B, as seen in Fig. 2.

These partitions could be omitted, though it is which space is filled with glycerine. The object of this is to guard and keep from corrosion the tank A. I use glycerine in preference to anything else, because it not only prevents.

corrosion, but is not seriously affected by cold weather. Water or any other liquid could be used, if desired, and the temperature regulated by drawing off some and pouring in an equal quantity hot.

If no liquid or solid packin g be used between the tanks, the pipe G and the portion of the pipe K within the tank P could be omitted, the aperture F and the pipe H H remaining the same. In this case the gas from the pipe K and aperture F would both descend to the same level to enter the outletpipe H, so that the working of the valve I would be the same.

In this case the tank A would be surrounded by gas. The tank A, chamber B, or its equivalent, floats c c, or their equivalents, pipes D and E, together with an outlet-pipe, could be used without any ofthe other parts, or with either one of them separately; and, moreover, either one or all of them could be used with any other carburetor; but the whole are necessary to avoid all the obstacles hitherto experienced in carbureting gas, thus forming a complete article.

I am aware that partitions have heretofore been used in carburetors to make a devious or irregular course therein for the gas, but never such as to increase the rapidity of the current or make it approximate in rapidity even to the current in the inlet-pipe and therefore, while I disclaim such partitions,

I claim as my invention 1 1. The combination, in a carburetor, of the tank A, float B, pipes D and E, and pipes H, K, 15 and L, with a valve at I, constructed to operate substantially as described.

2. The combination, in a carburetor, of a heating-chamber, O, constructed with partitions therein to form a narrow channel, in con- 20 nection with the pipes M and L, all substantially as described.

DEXTER M. SMALL.

Witnesses GEO. H. REMINGTON, CHARLES HANNIGAN. 

